Electronics > Beginners
Can I power this 6V preamp from 12V?
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Zero999:

--- Quote from: ELS122 on October 22, 2019, 02:14:44 pm ---
--- Quote from: ELS122 on October 22, 2019, 02:13:24 pm ---I have figured out the preamp now there is a problem whit the coupling cap, my amp has a 50k pot on the input put volume and it whit the coupling cap from the circuit created a high pass filter. and if I put a 1uF electrolitic it starts conducting dc for some reason. also when I don't put another  coupling cap at the end of the circuit it also conducts DC for some reason
What could be the problem? (Attachment Link)
NOTE: I know it's an overdrive circuit but it doubles as a preamp when I turn it down.

--- End quote ---
when I put like a 47nF cap for DC coupling at the circuit it doesn't pass DC trough!

--- End quote ---
That's because it's an AC coupling, not DC coupling capacitor..

If your 1μF was conducting, it was either because it was damaged or connected backwards.
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